Section 19. The minute, when registered, shall be deemed to be substituted for the corresponding part of the mem

19. The minute, when registered, shall be deemed to be substituted for the corresponding part of the memorandum of association of the Company, and shall be of the same validity, and subject to the same alterations, as if it had been originally contained in the memorandum of association; and, subject as in this Act mentioned, no member of the Company, whether past or present, shall be liable in respect of any share to any call or contribution exceeding in amount the difference (if any) between the amount which has been paid on such share and the amount of the share as fixed by the minute.